Mower runs but has small backfires when accelerator moves up.
Craftsman 917.289220 Mower runs but has small backfires as throttle is moved up. Also loses power as this happens.
A spark plug that is damaged, worn, or has an improperly set gap between its electrodes creates a weak spark. As a result, the fuel may not ignite in the cylinder, but it might ignite when it reaches the hot exhaust muffler. The result is a loud backfire. Poor spark also results in a mower that runs unreliably.
このアンサーは役に立ちましたか?
Changed plug. Same result. The plug I took out was black with carbon, I guess.
Your plug sounds like it is getting to much gas. Here's how to read a plug:
It is dry fouling according to the pic. How do I remedy this?
過去 24時間: 4
過去 7 日: 33
過去 30 日: 111
今までの合計 6,483
3 件のコメント
Forgot to mention, air filter is clean, oil ok, fuel flows freely through filter.
Brian clark さんによる
@bvilleeer sounds more like a carb issue than an ignition issue. What make and model is your mowers engine?
oldturkey03 さんによる
Not sure oldturkey03. Briggs 21hp
Brian clark さんによる